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PhysicalPlan

sochdb_query::cost_optimizer

Enum PhysicalPlan 

Source 
pub enum PhysicalPlan {
    TableScan {
        table: String,
        columns: Vec<String>,
        predicate: Option<Box<Predicate>>,
        estimated_rows: u64,
        estimated_cost: f64,
    },
    IndexSeek {
        table: String,
        index: String,
        columns: Vec<String>,
        key_range: KeyRange,
        predicate: Option<Box<Predicate>>,
        estimated_rows: u64,
        estimated_cost: f64,
    },
    Filter {
        input: Box<PhysicalPlan>,
        predicate: Predicate,
        estimated_rows: u64,
        estimated_cost: f64,
    },
    Project {
        input: Box<PhysicalPlan>,
        columns: Vec<String>,
        estimated_cost: f64,
    },
    Sort {
        input: Box<PhysicalPlan>,
        order_by: Vec<(String, SortDirection)>,
        estimated_cost: f64,
    },
    Limit {
        input: Box<PhysicalPlan>,
        limit: u64,
        offset: u64,
        estimated_cost: f64,
    },
    NestedLoopJoin {
        outer: Box<PhysicalPlan>,
        inner: Box<PhysicalPlan>,
        condition: Predicate,
        join_type: JoinType,
        estimated_rows: u64,
        estimated_cost: f64,
    },
    HashJoin {
        build: Box<PhysicalPlan>,
        probe: Box<PhysicalPlan>,
        build_keys: Vec<String>,
        probe_keys: Vec<String>,
        join_type: JoinType,
        estimated_rows: u64,
        estimated_cost: f64,
    },
    MergeJoin {
        left: Box<PhysicalPlan>,
        right: Box<PhysicalPlan>,
        left_keys: Vec<String>,
        right_keys: Vec<String>,
        join_type: JoinType,
        estimated_rows: u64,
        estimated_cost: f64,
    },
    Aggregate {
        input: Box<PhysicalPlan>,
        group_by: Vec<String>,
        aggregates: Vec<AggregateExpr>,
        estimated_rows: u64,
        estimated_cost: f64,
    },
}
Expand description

Physical query plan node

Variants§

§

TableScan

Table scan (full or partial)

Fields

§table: String
§columns: Vec<String>
§predicate: Option<Box<Predicate>>
§estimated_rows: u64
§estimated_cost: f64
§

IndexSeek

Index seek

Fields

§table: String
§index: String
§columns: Vec<String>
§key_range: KeyRange
§predicate: Option<Box<Predicate>>
§estimated_rows: u64
§estimated_cost: f64
§

Filter

Filter operator

Fields

§input: Box<PhysicalPlan>
§predicate: Predicate
§estimated_rows: u64
§estimated_cost: f64
§

Project

Project operator (column subset)

Fields

§input: Box<PhysicalPlan>
§columns: Vec<String>
§estimated_cost: f64
§

Sort

Sort operator

Fields

§input: Box<PhysicalPlan>
§order_by: Vec<(String, SortDirection)>
§estimated_cost: f64
§

Limit

Limit operator

Fields

§input: Box<PhysicalPlan>
§limit: u64
§offset: u64
§estimated_cost: f64
§

NestedLoopJoin

Nested loop join

Fields

§outer: Box<PhysicalPlan>
§inner: Box<PhysicalPlan>
§condition: Predicate
§join_type: JoinType
§estimated_rows: u64
§estimated_cost: f64
§

HashJoin

Hash join

Fields

§build: Box<PhysicalPlan>
§probe: Box<PhysicalPlan>
§build_keys: Vec<String>
§probe_keys: Vec<String>
§join_type: JoinType
§estimated_rows: u64
§estimated_cost: f64
§

MergeJoin

Merge join

Fields

§left: Box<PhysicalPlan>
§right: Box<PhysicalPlan>
§left_keys: Vec<String>
§right_keys: Vec<String>
§join_type: JoinType
§estimated_rows: u64
§estimated_cost: f64
§

Aggregate

Aggregate operator

Fields

§input: Box<PhysicalPlan>
§group_by: Vec<String>
§aggregates: Vec<AggregateExpr>
§estimated_rows: u64
§estimated_cost: f64

Trait Implementations§

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impl Clone for PhysicalPlan

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fn clone(&self) -> PhysicalPlan

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PhysicalPlan

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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fn borrow_mut(&mut self) -> &mut T

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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